Added `addGLTexture` method to save WebGL Textures directly into the Texture Manager.
Added `addGLTexture` method to save WebGL Textures directly into the Texture Manager.

TukekeSoft/phaser,mahill/phaser,spayton/phaser,TukekeSoft/phaser,BeanSeed/phaser,photonstorm/phaser,photonstorm/phaser,TukekeSoft/phaser,spayton/phaser,mahill/phaser,BeanSeed/phaser